package com.atguigu.myjuc.interactive;

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

class ShareData {
    private int R = 1; //标志位  A:1 B：2 C：3
    Lock lock = new ReentrantLock();
    Condition condition1 = lock.newCondition();
    Condition condition2 = lock.newCondition();
    Condition condition3 = lock.newCondition();

    public void print5() throws InterruptedException {
        lock.lock();
        try {
            while (R != 1){
                condition1.await();
            }
            for (int i = 1; i <= 5; i++) {
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            R = 2;
            condition2.signal();
        }finally {
            lock.unlock();
        }
    }
    public void print10() throws InterruptedException {
        lock.lock();
        try {
            while (R!=2){
                condition2.await();
            }
            for (int i = 1; i <= 10; i++) {
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            R = 3;
            condition3.signal();
        }finally {
            lock.unlock();
        }
    }
    public void print15() throws InterruptedException {
        lock.lock();
        try {
            while (R!=3){
                condition3.await();
            }
            for (int i = 1; i <= 15; i++) {
                System.out.println(Thread.currentThread().getName()+"\t"+i);
            }
            R = 1;
            condition1.signal();
        }finally {
            lock.unlock();
        }
    }
}
/**

 * 多线程之间按顺序调用，实现A->B->C
 * 三个线程启动，要求如下：
 *  *  *
 * AA打印5次，BB打印10次，CC打印15次
 * 接着
 * AA打印5次，BB打印10次，CC打印15次
 * ......来10轮
 *  *
 *
 *  笔记：Java里面如何进行工程级别的多线程编写
 *  * 1 多线程变成模板（套路）
 *  *  高内聚低耦合前提下，线程    操作    资源类
 *  *  *
 *    2 判断   干活   通知
 *  *  *
 *    3 多线程通信中，如果存在wait方法的调用要避免，------虚假唤醒
 */

public class ThreadOrderAccess {


    public static void main(String[] args) {
        ShareData shareData = new ShareData();

        new Thread(()->{
            for (int i = 1; i <= 10; i++) {
                try {
                    shareData.print5();
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        },"A").start();
        new Thread(()->{
            for (int i = 1; i <= 10; i++) {
                try {
                    shareData.print10();
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        },"B").start();
        new Thread(()->{
            for (int i = 1; i <= 10; i++) {
                try {
                    shareData.print15();
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
        },"C").start();
    }

}
